Used my 1520 twice for payment. Went surprisingly well. Until I went to CVS, it didn't work. Then I realized that CVS turn all its mobile pay off, including Apple Pay in order to promote its own system.
The phone and firmware requirement (must be carrier branded and untouched firmware) will be there forever for security concerns (there is no way to test how a hacked phone can do to a payment system), at least not until MS can provider OS level payment security guarantee.
The phone and firmware requirement (must be carrier branded and untouched firmware) will be there forever for security concerns (there is no way to test how a hacked phone can do to a payment system), at least not until MS can provider OS level payment security guarantee.